Help needed about the noise from suspension
MBWorld God!
Joined: Dec 2019
Posts: 32,368
Likes: 6,327
It might be a specific batch or if it really has to do with the salt belt. Can forum members share their build date?
Newbie
Joined: May 2025
Posts: 2
Likes: 0
The service team replaced several front suspension components, recalibrated the AIRMATIC system, and conducted multiple tests. At one point, they even replaced the front gearbox mount (as a test), but after a short test drive with no improvement, they reinstalled the original part. Despite all efforts, the problem persists. A sharp metallic knocking sound occurs **intermittently** when driving over uneven surfaces, especially under light acceleration or braking. For example, in an underground parking area with artificial bumps, I can pass over the same bump five times — one or two times it behaves as expected and absorbs the impact smoothly, but on the other three passes, a strong metallic impact occurs in the front suspension, as if metal is hitting metal.
Senior Member
Joined: Apr 2025
Posts: 488
Likes: 204
From: Lowcountry, GA
'25 S580
The service team replaced several front suspension components, recalibrated the AIRMATIC system, and conducted multiple tests. At one point, they even replaced the front gearbox mount (as a test), but after a short test drive with no improvement, they reinstalled the original part. Despite all efforts, the problem persists. A sharp metallic knocking sound occurs **intermittently** when driving over uneven surfaces, especially under light acceleration or braking. For example, in an underground parking area with artificial bumps, I can pass over the same bump five times — one or two times it behaves as expected and absorbs the impact smoothly, but on the other three passes, a strong metallic impact occurs in the front suspension, as if metal is hitting metal.
So this could be something other than a simple faulty bushing and more so related to the adaptive suspension and its behavior.
Either way keep us posted on how the investigation progresses.
Member
Joined: Dec 2024
Posts: 84
Likes: 13
From: Uppsala
S600 w222
Had similar on my lexus LS600hL before and replace struts and shock absorber front no betterfinally I figured out the fault and it was a brake pad that was loose and causing this annoying noise
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